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My recommnedation on the repair for the leak (presuming leaking around bolt hole):

1) remove dish and mounting bracket and bolts, and inject roof repair mastic (in caulk tube) into the bolt holes, so the entire hole is filled with it. Have to push down hard with sharp square-cut tip so it does not leak out between the shingles. And of course, assuming bolt went all the way through the sheathing, you can squeeze and squeeze till the attic is full, so need to do a good couple of pulls on the caulk gun handle to fill the bottom of the hole, then back off a bit to fill the rest where the caulk tube tip was, to a slight dome over the hole location (because it will shrink a bit as it cures). Good idea to go back up and put a second layer over the holes after a couple of weeks, because as it cures it will likely pull back and crack a bit.

2) Second option - remove everything as above, but put some asphaltic sealant/mastic into the bolt holes (perhaps half full) but then put the bolts back in the holes to seal them - preferably with a washer under the head to seal better. use mastic under and on top of washer to form a seal around the bolt - can also smear around on it to cover up the color of the bolt.

Don't forget to have them asphaltic seal any holes from staples or clamps used to hold the antenna wires to the roof also.

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